Description
Seoninbong is very similar in style and variety to its neighboring peak Insubong. Seoninbong has over thirty-one routes, and is primarily slab and crack with an assortment of face, chimney, face and overhang climbing. The average route is four to six pitches in length. The longest, Yodel Buttress, is eight pitches. The hardest, Gangjeok Crack(5.12c) is two pitches. Seoninbong is considered the harder of the two for obvious reasons--IT IS.

Directions
Either take Line 4 to No-won Station and transfer to Line 7 or take Line 7 to Dobong Station.directly. From Dobongyeok, corss the main road and just head up in the direction of Seoninbong. You will pass plenty of shops and vendors on your way up. After the ticket booth, there is a fork in the road, stay to the right and walk past the temple on your right. Stay on this main road until you reach the main trailhead. Just before the main trailhead, there will be another fork, stay to the main trail and hike on up. The hike is roughly thirty to forty-five minutes in. After about twenty minutes of hiking, there will be another fork and sign toward a temple. Go left and up. The higher you get, the easier it will be to spot Seoninbong's base. Just follow your nose.

Safety Concerns
RE: ABSEILING
Don't be fool! I repeat, bring at least two fifty meter ropes-two sixty meter ropes is better. Abseiling can be dangerous at Seoninbong primarily because the belay stations are not exact in length with rope lengths. If you are not familiar with your route, climb with two ropes!
RE: ANCHORS
Anchors at Insubong are a regular concern. Although the bolts of the belay anchors are typically very solid, the Korean habit of slinging them with American triangles is prevalent.
RE: BOLTED ROUTES
Insubong is probably the longest climbed peak in all of Korea; hence, their are still routes that still have the out-dated and typically corroded ring-bolts.
RE: RUN-OUT
Seoninbong is primarily slab. Koreans love to run it out. SO KEEP THIS IN MIND!!!
RE: CLIMBING TRAFFIC
If you do not like jockeying for your route, waiting in line behind several other parties, sharing belay anchors, and having people precariously running every which way around you--DON'T CLIMB ON SUNDAYS!!! Saturdays and weekdays are generally fine.

Gear to Bring
Seoninbong has several bolted routes, but it would be extremely foolish not to bring the minimum of at least a complete rack of cams, five double slings, five single slings, at least ten quick-draws, and the like. Doubling up on the four midrange cams is generally a good idea. Two fifty meter ropes is a must! Two sixty meter ropes is best! Passive gear would be a bonus; however, placements for them are very limited. Although not neccessary, a small off-set friend rack is handy on some of the flaring cracks routes. DEFINITELY BRING AT LEAST A FEW DISPOSABLE SLINGS FOR THOSE LESS THAN OPPORTUNE RAPS!

Additional Comments
Water can be found on the main road up before actually stepping onto dirt. There are plenty of shops and vendors at the base at which to buy food. Same rules apply for camping here as at Insubong since Seoninbong is also in Bukhansan. Entry fees are the same.

Route beta is hard to come by for Seoninbong. I recommnend doing quick surf on the Korean internet. Just about every major climbing club in Korea will have information on Seoninbong.